Solid Wetting Agent Ink Composition for Dotting Accuracy
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Solution Overview
Problem
Inkjet technology lacks improvement in positional accuracy of ink dotting and blocking resistance in commercial printing applications, despite advancements in water fastness and light fastness of images.
Innovation Solution
An ink composition including a pigment, water, a polymerizable compound with an acrylamide structure, a polymerization initiator, and a solid wetting agent, where the wetting agent is present in a specific mass ratio to enhance deposition accuracy and blocking resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional ink compositions are used, then water fastness and light fastness are achieved, but positional accuracy of ink dotting and blocking resistance are insufficient
Solution Approach 1:
The patent changes the physical state parameter of the wetting agent from liquid to solid form, and optimizes its concentration parameter within 0.01-400% by mass relative to the polymerizable compound. This parameter change resolves the contradiction by improving positional accuracy and blocking resistance while maintaining the water fastness and light fastness achieved by conventional compositions.
Solution Approach 2:
The patent creates a composite ink composition by combining a solid wetting agent with a polymerizable compound having an acrylamide structure. This composite material approach allows the ink to simultaneously achieve good fastness properties and improved positional accuracy, resolving the technical contradiction between reliability and manufacturing precision.
2Productivity
If conventional ink compositions are used, then basic printing functionality is maintained, but blocking resistance is insufficient
Solution Approach 1:
The patent optimizes the concentration parameter of the solid wetting agent within 0.01-400% by mass relative to the polymerizable compound, which improves blocking resistance while maintaining basic printing functionality. This parameter optimization resolves the contradiction between productivity and reliability.
3Ease of operation
If a two-liquid ink with aggregating agent is used, then dischargeability from ejection head is improved, but positional accuracy of ink dotting is not sufficiently considered
Solution Approach 1:
The patent changes the physical state of the wetting agent to solid form and optimizes its concentration parameter, which simultaneously maintains good dischargeability from the ejection head and significantly improves positional accuracy of ink dotting. This resolves the contradiction between ease of operation and manufacturing precision.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The ink composition improves positional accuracy of ink dotting and blocking resistance, leading to higher image quality and reliability in commercial printing.
Implementation Method 1
an ink composition including a pigment, water, a polymerizable compound having an acrylamide structure, a polymerization initiator
Implementation Method 2
a wetting agent that is in the form of a solid at a temperature of 25° C. and an atmospheric pressure of 1 bar
Data Source
AI summary
The invention provides an ink composition including a pigment, water, a polymerizable compound having an acrylamide structure, a polymerization initiator and a wetting agent that is in the form of a solid at a temperature of 25° C. and an atmospheric pressure of 1 bar, the wetting agent being included in the ink composition in an amount of from 0.01% by mass to 400% by mass with respect to the polymerizable compound having an acrylamide structure.